The developers with the Mercedes-Benz G 63 AMG 6x6 are now
stepping up a gear with the G 500 4x4². So what’s the recipe? Simple, they take
the superior all-wheel-drive powertrain including portal axles from the 6x6 –
take away one axle – and blend it all with a newly-developed variable chassis
and the series-production G-Class body. A large pinch of V8 power with massive 422
hp, a set of 22-inch 325/55 R 22-sized wheels, carbon-fibre body parts and then
just gourmet ingredients from the seductive designo Exclusive range for the
interior – and the 5-star menu for all off-road enthusiasts is ready.
A new addition to the extreme G-Class model family: the G 63
AMG 6x6 has a model brother in the form of the G 500 4x4². For off road
enthusiasts, this is pure undiluted thrill. The series-production models of the
G-Class supply the unshakeable foundations in the form of the body and
ladder-type frame, which compensate for the considerably increased performance
of the G 500 4x4² without any problem and also without any type of
reinforcements. The G 63 AMG 6x6 donates an amended version of the ruggedly
determined permanent all-wheel-drive powertrain with portal axles. The engine
compartment houses a completely new V8 engine with a displacement of four
litres, direct injection and biturbocharging. Also new is the chassis with dual
spring/damper struts and adjustable damping. Finally, in the interior, the G 500
4x4² occupants enjoy comfort and an ambience on a par with a luxury saloon.
New engine offers V8
The 4.0 litre V8 biturbo engine in the G 500 4x4² stands out
for its sublime power delivery, the targeted lightweight construction, as well
as its high efficiency. The newly developed eight-cylinder features twin
turbochargers which are not mounted on the outside of the cylinder banks but
rather inside the V configuration – what is known as the 'hot inside V'. The
advantages lie in the compact engine design, the optimum response and the low
exhaust gas emissions. The piezo direct petrol injection used exclusively at
Mercedes-Benz is responsible for the mixture formation. The spray-guided
combustion process has been enhanced in the third generation to meet all future
statutory requirements. In series production, the highly efficient and
economical 4.0-litre V8 biturbo engine would meet the Euro 6 emission standard,
including the maximum particulate emissions level that will not take effect
The V8 crankcase consists of an aluminium alloy and ensures
maximum strength with the lowest possible weight. The cylinder walls in Nanoslide
technology are twice as hard as conventional cast-iron cylinder liners,
minimise the inner friction and thus the fuel required and facilitate maximum
mileages. Nanoslide was developed by Daimler starting in the year 2000 and has
so far been used successfully and reliably in over 200,000 engines since 2006.
Twin sidepipes on both sides in front of the rear wheels modulate
the G-typical sound of the G 500 4x4² and master the entire repertoire of
potent sports cars - from soft mumbling in neutral through sonorous humming in
the partial-load range to emphatic booming when accelerating under full load. A
welcome side effect of the sidepipes: there is improved off-road capability,
because in the rear area there are none of the usual rear silencers, which
could otherwise restrict the angle of departure.
Things are really
looking up both on and off-road
In view of the key data for the chassis and powertrain it
seems more than logical that the off-road world starts for the G 500 4x4² where
other vehicles capitulate. But it is surprising that the new "G" puts
in an absolutely convincing performance on the asphalt. Due to the considerably
wider track of the portal axles compared with the series-production car (+299
mm), the large 22-inch 325/55 R 22-sized wheels and the adjustable damping with
its Sport mode, the enhanced G-Class drives through bends so dynamically that
the occupants feel as though they are in a sports car rather than a
cross-country vehicle. This also applies to tours on unsurfaced slopes or
snow-bound roads, in which case the performance of a high-powered rally car
For anyone preferring to use the G 500 4x4² off the beaten
track, the optional off-road size 37 x 12.5 x 18-inch MT tyres are recommended.
Permanent all-wheel drive, an off-road reduction in the transfer case, portal
axles and three differentials lockable whilst on the move will not be found on
conventional cross-country vehicles. This results in merciless driving dynamics
in all conditions. Even the highest sand dunes are stormed by the show car with
ease, whilst rocky terrain is scaled like a chamois, and water is driven
through without any problems.
The portal axles developed for versatile applications
supplement the off-road portfolio of Mercedes-Benz and are the technical
highlight of the G 500 4x4² show car. As opposed to conventional rigid axles,
here the wheels are not at the height of the centre of the axle, instead they
are situated much further below on the axle heads due to the portal
transmission. Therefore, on the G 500 4x4² the ground clearance rises to 450
millimetres and the fording depth – or rather the diving depth – to 1000
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